Collagen Type IV

**Definition:** A non-fibrillar collagen found in the structure of BASEMENT MEMBRANE. Collagen type IV molecules assemble to form a sheet-like network which is involved in maintaining the structural integrity of basement membranes. The predominant form of the protein is comprised of two alpha1(IV) subunits and one alpha2(IV) subunit, however, at least six different alpha subunits can be incorporated into the heterotrimer.

**Tree numbers:** - D12.776.860.300.250.400.100

**Synonyms:** - Type IV (Basement Membrane) Collagen - Type IV Collagen